CHICAGO -- Noah Syndergaard, the Mets' prized pitching prospect, had to leave tonight's start in Las Vegas with what the club is calling "discomfort" in his left shoulder. He was involved at a play at home plate trying to make a tag and was removed from the game following it.

The team is awaiting results on an X-ray for him.

Syndergaard was in the midst of his first start back with the Mets' Triple-A affiliate after a stint on the disabled list with a right elbow injury.

Syndergaard allowed three hits and three runs in 2/3 of an inning before being taken out.